Light-harvesting chlorophyll c-like pigment in Prochloron.
نویسندگان
چکیده
منابع مشابه
A new form of chlorophyll C involved in light-harvesting.
A new form of chlorophyll c has been isolated from the pyrmnesiophyte Pavlova gyrans Butcher. This pigment is spectrally similar to chlorophyll c(2), but all the absorption maxima (454, 583, and 630 nm in diethyl ether) are shifted 4 to 6 nanometers to longer wavelengths. The new pigment can be separated from other chlorophyll c-type pigments by reversed-phase high performance liquid chromatogr...
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Prochlorophytes are a class of cyanobacteria that do not use phycobiliproteins as light-harvesting systems, but contain chlorophyll (Chl) a/b-binding Pcb proteins. Recently it was shown that Pcb proteins form an 18-subunit light-harvesting antenna ring around the photosystem I (PSI) trimeric reaction center complex of the prochlorophyte Prochlorococcus marinus SS120. Here we have investigated w...
متن کاملLight-Harvesting Chlorophyll a/b Complexes: Interdependent Pigment Synthesis and Protein Assembly.
The biogenetic interdependence of light-harvesting chlorophyll (Chl) a/b proteins (LHCPs) and antenna pigments has been analyzed for two nuclear mutants of Chlamydomonas that have low levels of Chl b, neoxanthin, and loroxanthin. In mutant PA2.1, the apoprotein precursors (pLHCP II) of the major light-harvesting complex LHC II were synthesized at approximately wild-type rates, processed to thei...
متن کاملLight Harvesting in Anacystis nidulans Studied in Pigment Mutants.
Spontaneous pigment mutants of Anacystis nidulans were self-selected for improved growth in far red light (> 650 nanometers). Questions were asked about those features of the light-harvesting mechanism which altered to give the mutants improved photosynthetic performance in far red. Answers were sought by comparing pigment and reaction center concentrations for the parent and six mutants grown ...
متن کاملRole of allophycocyanin as light-harvesting pigment in cyanobacteria.
Photosynthetic action spectra of several cyanobacteria show a peak at about 650 nm, the height of which is correlated with allophycocyanin content in the strains examined. Allophycocyanin harvests light more efficiently than do phycocyanin and phycoerythrin. The contribution of chlorophyll a absorption to photosynthetic activity is barely detectable in cells of normal pigment composition. Chlor...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1994
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.91.2.679